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Finding the Fourth Proportional to 179,722.80, 269,584.20 and 86,180.40

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Solution

The fourth proportional to 179,722.80, 269,584.20 and 86,180.40 is: 129,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,722.80 : 269,584.20 = 86,180.40 : x
  2. Step 2: Convert to fraction form
    179,722.80/269,584.20 = 86,180.40/x
  3. Step 3: Cross multiply
    179,722.80x = 269,584.20 × 86,180.40
  4. Step 4: Simplify right side
    179,722.80x = 23,232,874,189.68
  5. Step 5: Solve for x
    x = 23,232,874,189.68/179,722.80
  6. Step 6: Final answer
    x = 129,270.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.